hey rich does wcdma hand off to gsm?
this came up in a previous thread and i have no clue on the answer.
if a person has a wcdma phone. they are talking on a wcdma network and travel out side the wcdma coverage aria can it then switch to a gsm network with out dropping the call?
if a person has a wcdma phone. they are talking on a wcdma network and travel out side the wcdma coverage aria can it then switch to a gsm network with out dropping the call?
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At the air interface level, UMTS itself is incompatible with GSM. UMTS phones sold in Europe (as of 2004) are UMTS/GSM dual-mode phones, hence they can also make and receive calls on regular GSM networks. If a UMTS customer travels to an area without UMTS coverage, a UMTS phone will automatically switch to GSM (roaming charges may apply). If the customer travels outside of UMTS coverage during a call, the call will be transparently handed off to available GSM coverage.
http://en.wikipedia.org/wiki/UMTS »
http://en.wikipedia.org/wiki/UMTS »
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